CalTopo 4+

Backcountry mapping evolved

CalTopo LLC

    • Free



Take the best mapping app with you wherever you go with the CalTopo app for iOS. Trusted by professional mountain guides, avalanche educators, and search and rescue teams, CalTopo has all the features you need to plan your next off-grid pursuit. Seamless integration between CalTopo online and your mobile device allows you to access and update your maps no matter where you are. Any changes you make will automatically sync across all devices, making exporting and importing your latest map a thing of the past.

The CalTopo app allows you to easily take your planning and navigation to the next level. Real time decision making in backcountry terrain is made easy with the ability to download maps and layers like slope angle shading to your device for offline use. Plan for conditions on your route with sun exposure, wind, precipitation and avalanche forecasts. View and track your location on the map using GPS, even if you are offline. Share maps with your teams or travel partners to plan collaboratively, and to ensure everyone has the necessary data. Monitor real time updates from the field, like your friends progress on a long outing with live tracking on shared maps.

Plan and navigate your next adventure with the CalTopo App today!

Map layers include:
• MapBuilder Topo, Hybrid and Overlay
• Forest Service Maps
• Scanned Topos
• Global Imagery
• Shaded Relief
• Slope Angle Shading (including high resolution elevation data where available)
• Parcel data
• Public Lands
• Weekly Satellite Imagery
• NAIP Satellite Imagery
• Sun Exposure
• Marine Charts
• Weather Forecasting (including wind, precipitation, and temperatures)
• Snow and Water Gauge Data
• Fire History/Activity
• And many more

Support and Feature Requests:
Email us at

What’s New

Version 1.10.5

Photo Waypoints

Ratings and Reviews

4.8 out of 5
3.4K Ratings

3.4K Ratings

andy legrunge ,

Fantastic no-frills toolkit for all-around backcountry navigation

The broad range of layers provided, plus the ability to dynamically “layer layers” and cache maps for offline use, makes this my go-to navigation resource for backcountry planning and navigation. Includes super detailed place name and trail/road info missing from many other map apps. Accurate slope angle shading is a literal lifesaver during avalanche season and weekly satellite data is awesome for estimating snow cover. Only wish that the NAIP satellite data layer came with a little more detail - I usually combine with Google Earth when planning trips for better landform visualization.

Abrehm ,

Great information but the app is lacking

1st off, I love CalTopo. I have been using the web version for years and have been a paid member for a while now. The amount of information available in CalTopo is unmatched in my opinion. The only problem that I have with the service is with the interface, especially the app. It is quite slow to load data and seems very buggy. I have to constantly force shut down the app and occasionally restart my phone for it to load things more quickly and properly. It got so annoying that I paid for Gaia to test it out because their app looks great, is quick and responsive pulling data up almost immediately. Unfortunately, while they have most of the data CalTopo has they don’t have all of it so I continue to use CalTopo. I’m really hoping they will get things sorted out in the future. It’s still worth the money bury very frustrating to use at times.

jeffyyyyy2000 ,

Best maps anywhere, horribly buggy app

CalTopo has all of the Forest Service maps which seem not to really be available elsewhere online. They are invaluable. Their web interface is great. However the iOS app is incredibly buggy. Map tiles go missing when you scroll despite having previously downloaded them, the FS Topo 2016 maps appear black and are not really useful versus the way they do appear on the website, the download interface has issues, the map periodically crashes, etc. It would be the best outdoors mapping app ever if they just fixed these navigation, map scrolling/zoom/management/download issues. I dare not go into the wilds alone with this as my sole map app for this reason (have had cases where I am is a tile that won’t render at all), but when it does work, it’s great.

App Privacy

The developer, CalTopo LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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